Which of the following combinations of gases describes the primary composition of the Earth's first atmosphere?

A. oxygen and water vapour
B. argon and nitrogen
C. carbon dioxide and water vapour
D. hydrogen and helium


Answer: D

Environmental & Atmospheric Sciences

You might also like to view...

Explain why air temperature measurements must be taken in the shade

What will be an ideal response?

Environmental & Atmospheric Sciences

Mongolia's coal mine are in the far west of the country

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Bodies of till shaped into streamlined hills are called ________.

A. kettles B. kames C. drumlins D. eskers E. moraines

Environmental & Atmospheric Sciences

What type of feature is Goat Rock? is it an erosional or depositional feature? What type of feature would it be if it wasn’t connected to the mainland by sediment?

What will be an ideal response?

Environmental & Atmospheric Sciences